[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.186 by root, Sat Dec 15 23:14:38 2007 UTC vs.
Revision 1.208 by root, Fri Feb 1 13:22:48 2008 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
51	# ifndef EV_USE_MONOTONIC	59	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	60	# define EV_USE_MONOTONIC 0
53	# endif	61	# endif
54	# ifndef EV_USE_REALTIME	62	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	63	# define EV_USE_REALTIME 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_NANOSLEEP
		68	# if HAVE_NANOSLEEP
		69	# define EV_USE_NANOSLEEP 1
		70	# else
		71	# define EV_USE_NANOSLEEP 0
56	# endif	72	# endif
57	# endif	73	# endif
58		74
59	# ifndef EV_USE_SELECT	75	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	76	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
146		162
147	#ifndef EV_USE_REALTIME	163	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	164	# define EV_USE_REALTIME 0
149	#endif	165	#endif
150		166
		167	#ifndef EV_USE_NANOSLEEP
		168	# define EV_USE_NANOSLEEP 0
		169	#endif
		170
151	#ifndef EV_USE_SELECT	171	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	172	# define EV_USE_SELECT 1
153	#endif	173	#endif
154		174
155	#ifndef EV_USE_POLL	175	#ifndef EV_USE_POLL
…		…
205	#endif	225	#endif
206		226
207	#if !EV_STAT_ENABLE	227	#if !EV_STAT_ENABLE
208	# undef EV_USE_INOTIFY	228	# undef EV_USE_INOTIFY
209	# define EV_USE_INOTIFY 0	229	# define EV_USE_INOTIFY 0
		230	#endif
		231
		232	#if !EV_USE_NANOSLEEP
		233	# ifndef _WIN32
		234	# include <sys/select.h>
		235	# endif
210	#endif	236	#endif
211		237
212	#if EV_USE_INOTIFY	238	#if EV_USE_INOTIFY
213	# include <sys/inotify.h>	239	# include <sys/inotify.h>
214	#endif	240	#endif
…		…
262		288
263	typedef ev_watcher *W;	289	typedef ev_watcher *W;
264	typedef ev_watcher_list *WL;	290	typedef ev_watcher_list *WL;
265	typedef ev_watcher_time *WT;	291	typedef ev_watcher_time *WT;
266		292
		293	#if EV_USE_MONOTONIC
		294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		295	/* giving it a reasonably high chance of working on typical architetcures */
267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	296	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		297	#endif
268		298
269	#ifdef _WIN32	299	#ifdef _WIN32
270	# include "ev_win32.c"	300	# include "ev_win32.c"
271	#endif	301	#endif
272		302
…		…
408	{	438	{
409	return ev_rt_now;	439	return ev_rt_now;
410	}	440	}
411	#endif	441	#endif
412		442
		443	void
		444	ev_sleep (ev_tstamp delay)
		445	{
		446	if (delay > 0.)
		447	{
		448	#if EV_USE_NANOSLEEP
		449	struct timespec ts;
		450
		451	ts.tv_sec = (time_t)delay;
		452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		453
		454	nanosleep (&ts, 0);
		455	#elif defined(_WIN32)
		456	Sleep (delay * 1e3);
		457	#else
		458	struct timeval tv;
		459
		460	tv.tv_sec = (time_t)delay;
		461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		462
		463	select (0, 0, 0, 0, &tv);
		464	#endif
		465	}
		466	}
		467
		468	/*****************************************************************************/
		469
413	int inline_size	470	int inline_size
414	array_nextsize (int elem, int cur, int cnt)	471	array_nextsize (int elem, int cur, int cnt)
415	{	472	{
416	int ncur = cur + 1;	473	int ncur = cur + 1;
417		474
…		…
543		600
544	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
545	if (events)	602	if (events)
546	{	603	{
547	unsigned long argp;	604	unsigned long argp;
		605	#ifdef EV_FD_TO_WIN32_HANDLE
		606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		607	#else
548	anfd->handle = _get_osfhandle (fd);	608	anfd->handle = _get_osfhandle (fd);
		609	#endif
549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
550	}	611	}
551	#endif	612	#endif
552		613
553	{	614	{
…		…
702	/*****************************************************************************/	763	/*****************************************************************************/
703		764
704	typedef struct	765	typedef struct
705	{	766	{
706	WL head;	767	WL head;
707	sig_atomic_t volatile gotsig;	768	EV_ATOMIC_T gotsig;
708	} ANSIG;	769	} ANSIG;
709		770
710	static ANSIG *signals;	771	static ANSIG *signals;
711	static int signalmax;	772	static int signalmax;
712		773
713	static int sigpipe [2];	774	static EV_ATOMIC_T gotsig;
714	static sig_atomic_t volatile gotsig;
715	static ev_io sigev;
716		775
717	void inline_size	776	void inline_size
718	signals_init (ANSIG *base, int count)	777	signals_init (ANSIG *base, int count)
719	{	778	{
720	while (count--)	779	while (count--)
…		…
724		783
725	++base;	784	++base;
726	}	785	}
727	}	786	}
728		787
729	static void	788	/*****************************************************************************/
730	sighandler (int signum)
731	{
732	#if _WIN32
733	signal (signum, sighandler);
734	#endif
735
736	signals [signum - 1].gotsig = 1;
737
738	if (!gotsig)
739	{
740	int old_errno = errno;
741	gotsig = 1;
742	write (sigpipe [1], &signum, 1);
743	errno = old_errno;
744	}
745	}
746
747	void noinline
748	ev_feed_signal_event (EV_P_ int signum)
749	{
750	WL w;
751
752	#if EV_MULTIPLICITY
753	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754	#endif
755
756	--signum;
757
758	if (signum < 0 \|\| signum >= signalmax)
759	return;
760
761	signals [signum].gotsig = 0;
762
763	for (w = signals [signum].head; w; w = w->next)
764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765	}
766
767	static void
768	sigcb (EV_P_ ev_io *iow, int revents)
769	{
770	int signum;
771
772	read (sigpipe [0], &revents, 1);
773	gotsig = 0;
774
775	for (signum = signalmax; signum--; )
776	if (signals [signum].gotsig)
777	ev_feed_signal_event (EV_A_ signum + 1);
778	}
779		789
780	void inline_speed	790	void inline_speed
781	fd_intern (int fd)	791	fd_intern (int fd)
782	{	792	{
783	#ifdef _WIN32	793	#ifdef _WIN32
…		…
788	fcntl (fd, F_SETFL, O_NONBLOCK);	798	fcntl (fd, F_SETFL, O_NONBLOCK);
789	#endif	799	#endif
790	}	800	}
791		801
792	static void noinline	802	static void noinline
793	siginit (EV_P)	803	evpipe_init (EV_P)
794	{	804	{
		805	if (!ev_is_active (&pipeev))
		806	{
		807	while (pipe (evpipe))
		808	syserr ("(libev) error creating signal/async pipe");
		809
795	fd_intern (sigpipe [0]);	810	fd_intern (evpipe [0]);
796	fd_intern (sigpipe [1]);	811	fd_intern (evpipe [1]);
797		812
798	ev_io_set (&sigev, sigpipe [0], EV_READ);	813	ev_io_set (&pipeev, evpipe [0], EV_READ);
799	ev_io_start (EV_A_ &sigev);	814	ev_io_start (EV_A_ &pipeev);
800	ev_unref (EV_A); /* child watcher should not keep loop alive */	815	ev_unref (EV_A); /* child watcher should not keep loop alive */
		816	}
		817	}
		818
		819	void inline_size
		820	evpipe_write (EV_P_ int sig, int async)
		821	{
		822	if (!(gotasync \|\| gotsig))
		823	{
		824	int old_errno = errno;
		825
		826	if (sig) gotsig = 1;
		827	if (async) gotasync = 1;
		828
		829	write (evpipe [1], &old_errno, 1);
		830	errno = old_errno;
		831	}
		832	}
		833
		834	static void
		835	pipecb (EV_P_ ev_io *iow, int revents)
		836	{
		837	{
		838	int dummy;
		839	read (evpipe [0], &dummy, 1);
		840	}
		841
		842	if (gotsig)
		843	{
		844	int signum;
		845	gotsig = 0;
		846
		847	for (signum = signalmax; signum--; )
		848	if (signals [signum].gotsig)
		849	ev_feed_signal_event (EV_A_ signum + 1);
		850	}
		851
		852	if (gotasync)
		853	{
		854	int i;
		855	gotasync = 0;
		856
		857	for (i = asynccnt; i--; )
		858	if (asyncs [i]->sent)
		859	{
		860	asyncs [i]->sent = 0;
		861	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		862	}
		863	}
801	}	864	}
802		865
803	/*****************************************************************************/	866	/*****************************************************************************/
804		867
		868	static void
		869	sighandler (int signum)
		870	{
		871	#if EV_MULTIPLICITY
		872	struct ev_loop *loop = &default_loop_struct;
		873	#endif
		874
		875	#if _WIN32
		876	signal (signum, sighandler);
		877	#endif
		878
		879	signals [signum - 1].gotsig = 1;
		880	evpipe_write (EV_A_ 1, 0);
		881	}
		882
		883	void noinline
		884	ev_feed_signal_event (EV_P_ int signum)
		885	{
		886	WL w;
		887
		888	#if EV_MULTIPLICITY
		889	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		890	#endif
		891
		892	--signum;
		893
		894	if (signum < 0 \|\| signum >= signalmax)
		895	return;
		896
		897	signals [signum].gotsig = 0;
		898
		899	for (w = signals [signum].head; w; w = w->next)
		900	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		901	}
		902
		903	/*****************************************************************************/
		904
805	static WL childs [EV_PID_HASHSIZE];	905	static WL childs [EV_PID_HASHSIZE];
806		906
807	#ifndef _WIN32	907	#ifndef _WIN32
808		908
809	static ev_signal childev;	909	static ev_signal childev;
		910
		911	#ifndef WIFCONTINUED
		912	# define WIFCONTINUED(status) 0
		913	#endif
810		914
811	void inline_speed	915	void inline_speed
812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	916	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
813	{	917	{
814	ev_child *w;	918	ev_child *w;
		919	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
815		920
816	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	921	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		922	{
817	if (w->pid == pid \|\| !w->pid)	923	if ((w->pid == pid \|\| !w->pid)
		924	&& (!traced \|\| (w->flags & 1)))
818	{	925	{
819	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	926	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
820	w->rpid = pid;	927	w->rpid = pid;
821	w->rstatus = status;	928	w->rstatus = status;
822	ev_feed_event (EV_A_ (W)w, EV_CHILD);	929	ev_feed_event (EV_A_ (W)w, EV_CHILD);
823	}	930	}
		931	}
824	}	932	}
825		933
826	#ifndef WCONTINUED	934	#ifndef WCONTINUED
827	# define WCONTINUED 0	935	# define WCONTINUED 0
828	#endif	936	#endif
…		…
925	}	1033	}
926		1034
927	unsigned int	1035	unsigned int
928	ev_embeddable_backends (void)	1036	ev_embeddable_backends (void)
929	{	1037	{
930	return EVBACKEND_EPOLL	1038	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
931	\| EVBACKEND_KQUEUE	1039
932	\| EVBACKEND_PORT;	1040	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1041	/* please fix it and tell me how to detect the fix */
		1042	flags &= ~EVBACKEND_EPOLL;
		1043
		1044	return flags;
933	}	1045	}
934		1046
935	unsigned int	1047	unsigned int
936	ev_backend (EV_P)	1048	ev_backend (EV_P)
937	{	1049	{
…		…
940		1052
941	unsigned int	1053	unsigned int
942	ev_loop_count (EV_P)	1054	ev_loop_count (EV_P)
943	{	1055	{
944	return loop_count;	1056	return loop_count;
		1057	}
		1058
		1059	void
		1060	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1061	{
		1062	io_blocktime = interval;
		1063	}
		1064
		1065	void
		1066	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1067	{
		1068	timeout_blocktime = interval;
945	}	1069	}
946		1070
947	static void noinline	1071	static void noinline
948	loop_init (EV_P_ unsigned int flags)	1072	loop_init (EV_P_ unsigned int flags)
949	{	1073	{
…		…
960	ev_rt_now = ev_time ();	1084	ev_rt_now = ev_time ();
961	mn_now = get_clock ();	1085	mn_now = get_clock ();
962	now_floor = mn_now;	1086	now_floor = mn_now;
963	rtmn_diff = ev_rt_now - mn_now;	1087	rtmn_diff = ev_rt_now - mn_now;
964		1088
		1089	io_blocktime = 0.;
		1090	timeout_blocktime = 0.;
		1091
965	/* pid check not overridable via env */	1092	/* pid check not overridable via env */
966	#ifndef _WIN32	1093	#ifndef _WIN32
967	if (flags & EVFLAG_FORKCHECK)	1094	if (flags & EVFLAG_FORKCHECK)
968	curpid = getpid ();	1095	curpid = getpid ();
969	#endif	1096	#endif
…		…
996	#endif	1123	#endif
997	#if EV_USE_SELECT	1124	#if EV_USE_SELECT
998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1125	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999	#endif	1126	#endif
1000		1127
1001	ev_init (&sigev, sigcb);	1128	ev_init (&pipeev, pipecb);
1002	ev_set_priority (&sigev, EV_MAXPRI);	1129	ev_set_priority (&pipeev, EV_MAXPRI);
1003	}	1130	}
1004	}	1131	}
1005		1132
1006	static void noinline	1133	static void noinline
1007	loop_destroy (EV_P)	1134	loop_destroy (EV_P)
1008	{	1135	{
1009	int i;	1136	int i;
		1137
		1138	if (ev_is_active (&pipeev))
		1139	{
		1140	ev_ref (EV_A); /* signal watcher */
		1141	ev_io_stop (EV_A_ &pipeev);
		1142
		1143	close (evpipe [0]); evpipe [0] = 0;
		1144	close (evpipe [1]); evpipe [1] = 0;
		1145	}
1010		1146
1011	#if EV_USE_INOTIFY	1147	#if EV_USE_INOTIFY
1012	if (fs_fd >= 0)	1148	if (fs_fd >= 0)
1013	close (fs_fd);	1149	close (fs_fd);
1014	#endif	1150	#endif
…		…
1046	array_free (fdchange, EMPTY);	1182	array_free (fdchange, EMPTY);
1047	array_free (timer, EMPTY);	1183	array_free (timer, EMPTY);
1048	#if EV_PERIODIC_ENABLE	1184	#if EV_PERIODIC_ENABLE
1049	array_free (periodic, EMPTY);	1185	array_free (periodic, EMPTY);
1050	#endif	1186	#endif
		1187	#if EV_FORK_ENABLE
		1188	array_free (fork, EMPTY);
		1189	#endif
1051	array_free (prepare, EMPTY);	1190	array_free (prepare, EMPTY);
1052	array_free (check, EMPTY);	1191	array_free (check, EMPTY);
1053	array_free (fork, EMPTY);
1054		1192
1055	backend = 0;	1193	backend = 0;
1056	}	1194	}
1057		1195
1058	void inline_size infy_fork (EV_P);	1196	void inline_size infy_fork (EV_P);
…		…
1071	#endif	1209	#endif
1072	#if EV_USE_INOTIFY	1210	#if EV_USE_INOTIFY
1073	infy_fork (EV_A);	1211	infy_fork (EV_A);
1074	#endif	1212	#endif
1075		1213
1076	if (ev_is_active (&sigev))	1214	if (ev_is_active (&pipeev))
1077	{	1215	{
1078	/* default loop */	1216	/* this "locks" the handlers against writing to the pipe */
		1217	gotsig = gotasync = 1;
1079		1218
1080	ev_ref (EV_A);	1219	ev_ref (EV_A);
1081	ev_io_stop (EV_A_ &sigev);	1220	ev_io_stop (EV_A_ &pipeev);
1082	close (sigpipe [0]);	1221	close (evpipe [0]);
1083	close (sigpipe [1]);	1222	close (evpipe [1]);
1084		1223
1085	while (pipe (sigpipe))
1086	syserr ("(libev) error creating pipe");
1087
1088	siginit (EV_A);	1224	evpipe_init (EV_A);
		1225	/* now iterate over everything, in case we missed something */
		1226	pipecb (EV_A_ &pipeev, EV_READ);
1089	}	1227	}
1090		1228
1091	postfork = 0;	1229	postfork = 0;
1092	}	1230	}
1093		1231
…		…
1115	}	1253	}
1116		1254
1117	void	1255	void
1118	ev_loop_fork (EV_P)	1256	ev_loop_fork (EV_P)
1119	{	1257	{
1120	postfork = 1;	1258	postfork = 1; /* must be in line with ev_default_fork */
1121	}	1259	}
1122		1260
1123	#endif	1261	#endif
1124		1262
1125	#if EV_MULTIPLICITY	1263	#if EV_MULTIPLICITY
…		…
1128	#else	1266	#else
1129	int	1267	int
1130	ev_default_loop (unsigned int flags)	1268	ev_default_loop (unsigned int flags)
1131	#endif	1269	#endif
1132	{	1270	{
1133	if (sigpipe [0] == sigpipe [1])
1134	if (pipe (sigpipe))
1135	return 0;
1136
1137	if (!ev_default_loop_ptr)	1271	if (!ev_default_loop_ptr)
1138	{	1272	{
1139	#if EV_MULTIPLICITY	1273	#if EV_MULTIPLICITY
1140	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1274	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1141	#else	1275	#else
…		…
1144		1278
1145	loop_init (EV_A_ flags);	1279	loop_init (EV_A_ flags);
1146		1280
1147	if (ev_backend (EV_A))	1281	if (ev_backend (EV_A))
1148	{	1282	{
1149	siginit (EV_A);
1150
1151	#ifndef _WIN32	1283	#ifndef _WIN32
1152	ev_signal_init (&childev, childcb, SIGCHLD);	1284	ev_signal_init (&childev, childcb, SIGCHLD);
1153	ev_set_priority (&childev, EV_MAXPRI);	1285	ev_set_priority (&childev, EV_MAXPRI);
1154	ev_signal_start (EV_A_ &childev);	1286	ev_signal_start (EV_A_ &childev);
1155	ev_unref (EV_A); /* child watcher should not keep loop alive */	1287	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1172	#ifndef _WIN32	1304	#ifndef _WIN32
1173	ev_ref (EV_A); /* child watcher */	1305	ev_ref (EV_A); /* child watcher */
1174	ev_signal_stop (EV_A_ &childev);	1306	ev_signal_stop (EV_A_ &childev);
1175	#endif	1307	#endif
1176		1308
1177	ev_ref (EV_A); /* signal watcher */
1178	ev_io_stop (EV_A_ &sigev);
1179
1180	close (sigpipe [0]); sigpipe [0] = 0;
1181	close (sigpipe [1]); sigpipe [1] = 0;
1182
1183	loop_destroy (EV_A);	1309	loop_destroy (EV_A);
1184	}	1310	}
1185		1311
1186	void	1312	void
1187	ev_default_fork (void)	1313	ev_default_fork (void)
…		…
1189	#if EV_MULTIPLICITY	1315	#if EV_MULTIPLICITY
1190	struct ev_loop *loop = ev_default_loop_ptr;	1316	struct ev_loop *loop = ev_default_loop_ptr;
1191	#endif	1317	#endif
1192		1318
1193	if (backend)	1319	if (backend)
1194	postfork = 1;	1320	postfork = 1; /* must be in line with ev_loop_fork */
1195	}	1321	}
1196		1322
1197	/*****************************************************************************/	1323	/*****************************************************************************/
1198		1324
1199	void	1325	void
…		…
1454	/* update fd-related kernel structures */	1580	/* update fd-related kernel structures */
1455	fd_reify (EV_A);	1581	fd_reify (EV_A);
1456		1582
1457	/* calculate blocking time */	1583	/* calculate blocking time */
1458	{	1584	{
1459	ev_tstamp block;	1585	ev_tstamp waittime = 0.;
		1586	ev_tstamp sleeptime = 0.;
1460		1587
1461	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1588	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1462	block = 0.; /* do not block at all */
1463	else
1464	{	1589	{
1465	/* update time to cancel out callback processing overhead */	1590	/* update time to cancel out callback processing overhead */
1466	time_update (EV_A_ 1e100);	1591	time_update (EV_A_ 1e100);
1467		1592
1468	block = MAX_BLOCKTIME;	1593	waittime = MAX_BLOCKTIME;
1469		1594
1470	if (timercnt)	1595	if (timercnt)
1471	{	1596	{
1472	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1597	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1473	if (block > to) block = to;	1598	if (waittime > to) waittime = to;
1474	}	1599	}
1475		1600
1476	#if EV_PERIODIC_ENABLE	1601	#if EV_PERIODIC_ENABLE
1477	if (periodiccnt)	1602	if (periodiccnt)
1478	{	1603	{
1479	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1604	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1480	if (block > to) block = to;	1605	if (waittime > to) waittime = to;
1481	}	1606	}
1482	#endif	1607	#endif
1483		1608
1484	if (expect_false (block < 0.)) block = 0.;	1609	if (expect_false (waittime < timeout_blocktime))
		1610	waittime = timeout_blocktime;
		1611
		1612	sleeptime = waittime - backend_fudge;
		1613
		1614	if (expect_true (sleeptime > io_blocktime))
		1615	sleeptime = io_blocktime;
		1616
		1617	if (sleeptime)
		1618	{
		1619	ev_sleep (sleeptime);
		1620	waittime -= sleeptime;
		1621	}
1485	}	1622	}
1486		1623
1487	++loop_count;	1624	++loop_count;
1488	backend_poll (EV_A_ block);	1625	backend_poll (EV_A_ waittime);
1489		1626
1490	/* update ev_rt_now, do magic */	1627	/* update ev_rt_now, do magic */
1491	time_update (EV_A_ block);	1628	time_update (EV_A_ waittime + sleeptime);
1492	}	1629	}
1493		1630
1494	/* queue pending timers and reschedule them */	1631	/* queue pending timers and reschedule them */
1495	timers_reify (EV_A); /* relative timers called last */	1632	timers_reify (EV_A); /* relative timers called last */
1496	#if EV_PERIODIC_ENABLE	1633	#if EV_PERIODIC_ENABLE
…		…
1762	#endif	1899	#endif
1763	if (expect_false (ev_is_active (w)))	1900	if (expect_false (ev_is_active (w)))
1764	return;	1901	return;
1765		1902
1766	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1903	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1904
		1905	evpipe_init (EV_A);
1767		1906
1768	{	1907	{
1769	#ifndef _WIN32	1908	#ifndef _WIN32
1770	sigset_t full, prev;	1909	sigset_t full, prev;
1771	sigfillset (&full);	1910	sigfillset (&full);
…		…
2180		2319
2181	#if EV_EMBED_ENABLE	2320	#if EV_EMBED_ENABLE
2182	void noinline	2321	void noinline
2183	ev_embed_sweep (EV_P_ ev_embed *w)	2322	ev_embed_sweep (EV_P_ ev_embed *w)
2184	{	2323	{
2185	ev_loop (w->loop, EVLOOP_NONBLOCK);	2324	ev_loop (w->other, EVLOOP_NONBLOCK);
2186	}	2325	}
2187		2326
2188	static void	2327	static void
2189	embed_cb (EV_P_ ev_io *io, int revents)	2328	embed_io_cb (EV_P_ ev_io *io, int revents)
2190	{	2329	{
2191	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2330	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2192		2331
2193	if (ev_cb (w))	2332	if (ev_cb (w))
2194	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2333	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2195	else	2334	else
2196	ev_embed_sweep (loop, w);	2335	ev_loop (w->other, EVLOOP_NONBLOCK);
2197	}	2336	}
		2337
		2338	static void
		2339	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2340	{
		2341	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2342
		2343	{
		2344	struct ev_loop *loop = w->other;
		2345
		2346	while (fdchangecnt)
		2347	{
		2348	fd_reify (EV_A);
		2349	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2350	}
		2351	}
		2352	}
		2353
		2354	#if 0
		2355	static void
		2356	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2357	{
		2358	ev_idle_stop (EV_A_ idle);
		2359	}
		2360	#endif
2198		2361
2199	void	2362	void
2200	ev_embed_start (EV_P_ ev_embed *w)	2363	ev_embed_start (EV_P_ ev_embed *w)
2201	{	2364	{
2202	if (expect_false (ev_is_active (w)))	2365	if (expect_false (ev_is_active (w)))
2203	return;	2366	return;
2204		2367
2205	{	2368	{
2206	struct ev_loop *loop = w->loop;	2369	struct ev_loop *loop = w->other;
2207	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2370	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2208	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2371	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2209	}	2372	}
2210		2373
2211	ev_set_priority (&w->io, ev_priority (w));	2374	ev_set_priority (&w->io, ev_priority (w));
2212	ev_io_start (EV_A_ &w->io);	2375	ev_io_start (EV_A_ &w->io);
2213		2376
		2377	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2378	ev_set_priority (&w->prepare, EV_MINPRI);
		2379	ev_prepare_start (EV_A_ &w->prepare);
		2380
		2381	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2382
2214	ev_start (EV_A_ (W)w, 1);	2383	ev_start (EV_A_ (W)w, 1);
2215	}	2384	}
2216		2385
2217	void	2386	void
2218	ev_embed_stop (EV_P_ ev_embed *w)	2387	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2220	clear_pending (EV_A_ (W)w);	2389	clear_pending (EV_A_ (W)w);
2221	if (expect_false (!ev_is_active (w)))	2390	if (expect_false (!ev_is_active (w)))
2222	return;	2391	return;
2223		2392
2224	ev_io_stop (EV_A_ &w->io);	2393	ev_io_stop (EV_A_ &w->io);
		2394	ev_prepare_stop (EV_A_ &w->prepare);
2225		2395
2226	ev_stop (EV_A_ (W)w);	2396	ev_stop (EV_A_ (W)w);
2227	}	2397	}
2228	#endif	2398	#endif
2229		2399
…		…
2254		2424
2255	ev_stop (EV_A_ (W)w);	2425	ev_stop (EV_A_ (W)w);
2256	}	2426	}
2257	#endif	2427	#endif
2258		2428
		2429	#if EV_ASYNC_ENABLE
		2430	void
		2431	ev_async_start (EV_P_ ev_async *w)
		2432	{
		2433	if (expect_false (ev_is_active (w)))
		2434	return;
		2435
		2436	evpipe_init (EV_A);
		2437
		2438	ev_start (EV_A_ (W)w, ++asynccnt);
		2439	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2440	asyncs [asynccnt - 1] = w;
		2441	}
		2442
		2443	void
		2444	ev_async_stop (EV_P_ ev_async *w)
		2445	{
		2446	clear_pending (EV_A_ (W)w);
		2447	if (expect_false (!ev_is_active (w)))
		2448	return;
		2449
		2450	{
		2451	int active = ((W)w)->active;
		2452	asyncs [active - 1] = asyncs [--asynccnt];
		2453	((W)asyncs [active - 1])->active = active;
		2454	}
		2455
		2456	ev_stop (EV_A_ (W)w);
		2457	}
		2458
		2459	void
		2460	ev_async_send (EV_P_ ev_async *w)
		2461	{
		2462	w->sent = 1;
		2463	evpipe_write (EV_A_ 0, 1);
		2464	}
		2465	#endif
		2466
2259	/*****************************************************************************/	2467	/*****************************************************************************/
2260		2468
2261	struct ev_once	2469	struct ev_once
2262	{	2470	{
2263	ev_io io;	2471	ev_io io;
…		…
2318	ev_timer_set (&once->to, timeout, 0.);	2526	ev_timer_set (&once->to, timeout, 0.);
2319	ev_timer_start (EV_A_ &once->to);	2527	ev_timer_start (EV_A_ &once->to);
2320	}	2528	}
2321	}	2529	}
2322		2530
		2531	#if EV_MULTIPLICITY
		2532	#include "ev_wrap.h"
		2533	#endif
		2534
2323	#ifdef __cplusplus	2535	#ifdef __cplusplus
2324	}	2536	}
2325	#endif	2537	#endif
2326		2538

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Comparing libev/ev.c (file contents): Revision 1.186 by root, Sat Dec 15 23:14:38 2007 UTC vs. Revision 1.208 by root, Fri Feb 1 13:22:48 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.186 by root, Sat Dec 15 23:14:38 2007 UTC vs.
Revision 1.208 by root, Fri Feb 1 13:22:48 2008 UTC